Smoke-preventer.



n. BAILEY.

SMOKE PREVENTEH. APPucATloN FILED 1m28, 191e.

Patented Dec. 4, 191 Y.

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ple, novel, andl thoroughly practical means for feeding heated! vair to the fire so that the heated air will commingle rwith the gases arising from the fire,randA thereby produce perfectcombustion` VGenerally" speaking the invention contemplates the deliverv of air under pressure and highly; heated to discharge outlets which may be in :theform of nozzles,1twyers, and the like, located in the lire box abovethe fire and relatively `positioned so thatthe air jets meet at the center of the fire and spread` in the form of air lilm directly over the fire, and cause the gases arising Jfrom thefire to commingle and thoroughlj7 mix with the air, and through such comminglingand mixing are entirely consumed, the resultbeing that a thorough and perfect Vcombustion is obtained withan increase of -heat and the entire` elimination of smoke or soot.y

I accomplish a thorough heating1 of the air by the provision of air supply pipe lines Vdisposed longitudinally in the walls `of the furnace, and in this connection the invention further contemplates the provision of a novel arrangement whereby `an equal distribution of air pressure is procured in the series of nozzles or twyers projecting from said supply pipe lines.

In producing an invention capable of carrying out the functions generally stated above, it will be understood, of course, that the same may be embodied in various forms, one simple and thoroughly practical embodiment being shown in the accompanying drawings wherein- Figure l is a vertical longitudinal sectional view of a furnace equipped with the improved means for feeding heated air to the fire.

Fig. 2 is a transverse sectional view taken on the line 22, Fig. 1.

Fig. 3,.i s a fragmentary horizontal sec tional view taken on the line 3-3, Fig. 1.

Specification of Letters Patent.

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Application filed Ianuaryl28, 1916. Serial No. 74,790.

In the simple form Jthe invention shown by the accompanying drawings, the air is discharged from oppositely disposed nozzles or `twyers l, embedded in the linings 2, and walls 3 of the fire box, the nozzles lbeing arrangedat a downward inclination so that the oppositely projected heated air j ets'will meetat approximately the center of the lire,

. as indicated bv Fig. 2 of the drawings, and

by such meeting the air jets are caused to spread in the form of a 4film above the fire in apositionto intercept the products of com bustion and cause athorough mixing` ofthe said products of combustion and the airy,

and such mixture being highlylcombustible 1s immediately consumed, thereby materially increasing the heat within the fire box, and

eliminating smoke, soot, and offensive `gases i that would otherwise result from the lire.

In order to assure a completelcombustion l of the mixed ani and gases within the lire box, it isynecessary that the air be highly heated when discharged'ontothe fire, and to assureof the air being in a highly :heated condition when so discharged,` my invention contemplates theplacing of theiplpes that connectwith thenozzles' l, in such positions that they lare always highlyheated so thatv the air that enters the same is immediately highly heated. As suggested by the accompanying drawings, the pipes e are embedded in Athe side walls 3 and disposed longitudinally of said walls, adjacent the linings 2 and the nozzles which are right-angular branches of the said pipes, the connections being made by means of elbows and 'l' couplings, or any other efficient form of connection. The pipes 4, as shown, may project through and outwardly of the facing plate of the boiler, and connect with air supply pipes 5, said air supply pipes being suitably connected to the outlet of the blower 6.

In the present showing, embodying a pair of nozzles in each supply pipe line 4;, and embodying consequently a 'l' coupling and elbow in each pipe line, it is noted that the pipe line is materially reduced between the T coupling and elbow, and this reduction serves to procure a uniform distribution of pressure in both nozzles by choking the pipe line immediately forwardly of the first nozzle, with respect to the direction of iow of air. rIhis reduction of the pipe line is particularly essential in view of the progressive heating to which the air is subjected in passing through the pipe line, with a consequent always heated.

tendency to increase in pressure. Should more than two nozzlesbe employed, involving a series of T couplings*theretor,'the suprply pipe line would be successively reduced adjacent the plurality of T couplings.

The blower (inlay be located in any desired .place or position, although it is more convenient to have the same adjacent the furnace, as such facilitates the control of the blower by the attendant in charge oi' the furnace.

The supply pipe 5 may be equipped with controlling valves, as shown by FiO. l of the drawings.

Theinvention, is, of course, not restricted to theusevopairs oli op'positely disposed nozzles, as more could, and in some instances should be used. It is however, essential that the nozzles shall be oppositelydisposed and arranged within the linings 2. and the walls 3, ,so that while they are protected by such linings and walls from the direct actionof the tire, they are always at a downward inclination, so that the air jets are projected downward, and meet centrally of the fire and thereby form an air lilm with which the gases thoroughly mixed.

And it is also essential that the pipes i be so disposed that they are highly heated, and that important advantage of the invention is obtained by embedding the said pipes inthe walls 3 in positions where they are It will bel-clear from the foregoing that this invention lis onel that can be applied toany type of irebox, either by embedding the saine in the'fire box as the lire box is being constructed, or by boring or removal of parts of walls and linings of lire boxes that have been in use.

It will be seen that this invention provides means whereby outside air is taken by the blower and conducted to the heated delivery pipes 4, and from said pipes 4i, the air having been pre-heated by said pipes, is discharged into the fire box by the nozzles l. This is a valuable feature ol my invention, in that the air after being heated is not subjected to the cooling inliuences of storage tanks or conducting pipes.

l claim: Y

The combination with a lire box, of a pair of pipe lines disposed longitudinally in the side walls of the lire box above the plane ol the 'grate whereby to receive heat therefrom, a series of nozzles connected with each pipe line and disposed transversely at an incline in the corresponding wall ol the fire box to discharge downwardly thereinto, a forced air supply communicating with said pipe lines, and said pipe lines being formed oi a series of sections, the vsections farthest from said air supply decreasing in diameter whereby to procure a uniform distribution ofthe pressure in said nozzles substantially as described.

In testimony that l claim the foregoing and have hereunto set my hand at Milwaukee, in the county of l\,/l ilwaukee, and State of lisconsin, in the presence of two witnesses.

RANSOM BAILEY.

Witnesses H. JosErI-I DOYLE, M. E. DowNEY.

Copies of this patentmayvbeobtained for five cents each,by addressing kthe Commissioner of Patents,

' Washington, D. C. 

